A dual-phase catalytic reaction-heterogeneous azeotropic distillation system and method
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A catalytic reaction and azeotropic distillation technology, applied in the chemical industry, can solve problems such as high energy consumption, large equipment investment, and long product separation and purification process
Inactive Publication Date: 2016-05-04
YANTAI UNIV
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[0006] The invention provides a dual-phase catalytic reaction-heterogeneous azeotropic distillation system and method. The dual-phase catalytic reaction-heterogeneous azeotropic distillation system provided by the invention is aimed at reversible reactions and multi-components in the production of acetic acid series esters. Azeotropic system, focusing on solving the problems of long product separation and refining process, high energy consumption and large equipment investment due to phase equilibrium restrictions
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[0063] Such as figure 1 As shown, a dual-phase catalytic reaction-heterogeneous azeotropic distillation system includes: a first storage tank 1, a first feed pump 2, a first metering tank 3, a first metering pump 4-1, a second metering Pump 4-2, second storage tank 5, second feeding pump 6, second metering tank 7, third metering pump 8-1, fourth metering pump 8-2, rectification tower 9, first condenser 10, Stratifier 11, third metering tank 12, first reflux pump 13-1, second reflux pump 13-2, fourth metering tank 14-1, fifth metering tank 14-2, dump pump 15, intermediate tank 16 and the second condenser 17, wherein,
[0064] The rectification column 9 is composed of a tower still and a tower column. On one side of the tower column, a first feed port, a second feed port and a third feed port are sequentially arranged from top to bottom, and the other side is arranged from top to bottom. The fourth feed port, the fifth feed port and the sixth feed port are provided in sequence...
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Abstract
The invention relates to a paraphase catalytic reaction-heterogeneous azeotropic distillation system and method. The paraphase catalytic reaction-heterogeneous azeotropic distillation system provided by the invention comprises a first storage tank, a first charging pump, a first metering tank, a first metering pump, a second metering pump, a second storage tank, a second charging pump, a second metering tank, a third metering pump, a fourth metering pump, a distillation tower, a first condenser, a quantizer, a third metering tank, a first reflux pump, a second reflux pump, a fourth metering tank, a fifth metering tank, a material pouring pump, a middle tank and a second condenser. According to the paraphase catalytic reaction-heterogeneous azeotropic distillation system provided by the invention, for reversible reaction and multi-component azeotropic systems in acetate series esters, the problems of long product separating an reefing processes, high energy consumption and high equipment investment, caused by phase equilibrium limitation, can be solved.
Description
technical field [0001] The invention relates to a dual-phase catalytic reaction-heterogeneous azeotropic distillation system and method, which belongs to the reaction strengthening technology in the field of chemical industry. Background technique [0002] In chemical production, reversible reactions and azeotrope separation processes are not uncommon, such as etherification, esterification, hydration and other processes. Due to the limitations of chemical equilibrium and phase equilibrium, these processes generally have low reaction conversion rates and complicated product separation and purification processes. , high energy consumption, and large investment in equipment. Catalytic distillation couples chemical reaction and product separation in a catalytic rectification tower. While performing chemical reaction, product separation is performed at the same time, so that the reversible reaction is always carried out in the direction of producing products, which greatly impro...
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